Blue is the typical colour of the British royal family, as a "living fossil" blue is also the classical colour of women.This tradition is complete saved today. Pink blue is one of the representative colour.Before 1912, when the bride married, she had to sewing blue ribbon on the umbrellas, and tie another to the waist.
So decorate the interior with various blues is ont noly the Royal legacy, but also the 19th century classicism is reflected.